<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区 -->
    <el-card>
      <!-- 警告区域 -->
      <el-alert
        title="添加商品信息"
        type="info"
        center
        :closable="false"
        show-icon
      >
      </el-alert>
      <!-- 步骤条 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- Tab栏 -->
      <el-form
        :model="addForm"
        :rules="addFormrules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClick"
        >
          <el-tab-pane label="基本信息" name="0">
            <!-- 基本信息详情页 -->
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="cascaderProps"
                @change="handleChange"
                clearable
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <!-- 商品参数详情页 -->
            <el-form-item
              v-for="item in manyTabData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <!-- 商品属性详情页 -->
            <el-form-item
              v-for="item in onlyTabData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- 商品图片详情页 -->
            <el-upload
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 商品内容详情页 -->
            <!-- 富文本编辑器 -->
          <quill-editor v-model="addForm.goods_introduce" ></quill-editor>
                  <el-button type="primary" @click="AddGood" class="addGoodBtn"
            >添加商品</el-button
          >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 预览图片对话框 -->
    <el-dialog
  title="图片预览"
  :visible.sync="dialogVisible"
  width="50%">
    <div class="block">
    <el-image
      style="width: 100%; height: 70%"
      :src="previewPath"></el-image>
  </div>
</el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data() {
    return {
      //激活的步骤的索引
      activeIndex: '0',
      //添加商品的数据
      addForm: {
        goods_name: '',
        goods_price: '',
        goods_weight: '',
        goods_number: '',
        goods_cat: [],
        pics:[],
        goods_introduce:'',
        attrs:[]
      },
      // 商品分类列表
      catelist: [],
      cascaderProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children',
        expandTrigger: 'hover',
      },
      //选中的分类的动态参数和静态属性数据
      manyTabData: [],
      onlyTabData: [],
      //图片上传组件的请求头对象
      headerObj:{
        Authorization : window.sessionStorage.getItem('token')
      },
      //图片的完整路径
      previewPath:'',
      //控制图片预览框的显示隐藏
      dialogVisible:false,
      //添加商品信息的验证规则
      addFormrules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' },
          {
            min: 2,
            max: 16,
            message: '长度在 2 到 16 个字符',
            trigger: 'blur',
          },
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
          {
            min: 2,
            max: 16,
            message: '长度在 2 到 16 个字符',
            trigger: 'blur',
          },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
          {
            min: 2,
            max: 16,
            message: '长度在 2 到 16 个字符',
            trigger: 'blur',
          },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
          {
            min: 2,
            max: 16,
            message: '长度在 2 到 16 个字符',
            trigger: 'blur',
          },
        ],
        goods_cat: [
          { required: true, message: '请输入商品分类', trigger: 'blur' },
        ],
      },
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    //获取商品分类数据
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取分类数据失败')
      }
      this.catelist = res.data
    },
    //监听级联选择器的变化
    handleChange() {
      console.log(this.addForm.goods_cat)
    },
    //监听Tab的切换
    beforeTabLeave() {
      if (this.addForm.goods_cat.length === 0) {
        this.$message.error('请完善当前页面的信息！')
        return false
      }
    },
    //Tab栏的点击事件
    async tabClick() {
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          { params: { sel: 'many' } }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取参数数据失败')
        }
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.manyTabData = res.data
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          { params: { sel: 'only' } }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取参数数据失败')
        }
        this.onlyTabData = res.data
      }
    },
    //处理图片预览效果
    handlePreview(file){
      this.dialogVisible = true
      this.previewPath = file.response.data.url
    },
    //处理图片删除效果
    handleRemove(file){
      const filePath =file.response.data.tmp_path
    const i=  this.addForm.pics.findIndex(x =>{
        x.pic === filePath
      })
      this.addForm.pics.splice(i,1)
    },
    //监听图片上传成功事件
    handleSuccess(response){
      const picsInfo = {
        pic:response.data.tmp_path
      }
      this.addForm.pics.push(picsInfo)
      console.log(this.addForm);
    },
        //点击添加商品按钮，触发添加商品接口
    AddGood(){
      this.$refs.addFormRef.validate(
      async  valid =>{
          if(!valid){
            return this.$message.error('请完善商品信息！')
          }
          //对addForm进行深拷贝
        const Form =   _.cloneDeep(this.addForm)
         Form.goods_cat= Form.goods_cat.join(',')
         //处理动态参数和静态属性
         this.manyTabData.forEach(item =>{
           const newInfo ={
             attr_id:item.attr_id,
             attr_value:item.attr_vals.join(' ')
           }
           this.addForm.attrs.push(newInfo)
         })
         //处理静态属性
            this.onlyTabData.forEach(item =>{
           const newInfo ={
             attr_id:item.attr_id,
             attr_value:item.attr_vals
           }
           this.addForm.attrs.push(newInfo)
         })
         Form.attrs = this.addForm.attrs
         //发起请求
         const{data:res} = await this.$http.post('goods', Form)
         if(res.meta.status !==201){
           return this.$message.error('添加商品失败')
         }
         this.$message.success('添加商品成功')
         this.$router.push('/goods')
        })
    },
  },
  computed: {
    //选中的三级分类的id
    cateId() {
      return this.addForm.goods_cat[this.addForm.goods_cat.length - 1]
    },

  },
}
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0 5px 0 0;
}
.addGoodBtn{
  margin-top: 10px;
}
</style>